Need help with eggs! Please help

Ok so here are three eggs I have candled. Yes I know there is a thread on this but I need help from individual people. So here we go. By the way these are being say on by a broody so they could be in different stages
Egg 1
There are some veins and a big black shape. Fertile ? How old ?
Egg 2
Bunches of little veins everywhere but a black shape cant be seen
Fertile ? How old ?
Egg 3
Completely black with a small air sack. I thought maybe it was rotten like the other black ones but when I smelt it, it smelled fine and warm like the mother. Not the distinct rotten smell
Fertile ? How old?